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Sci.Electronics.Basics
Sci.Electronics.Basics is a worldwide Usenet news group for discussion of electronics where there is no such thing as a stupid question. Beginners questions. Discussion of electronics education. Requests for other sources of information.

There are 3850 threads in our archives.
You are currently looking at page 17 of 257.
The threads with the newest additions are listed first.




rs232 question [3 articles]
malua mada! - 21:04 01-04-08
I have a controller that talks rs232 ,driven by a MAX232. 3 wires only. I connect the computer to it: works fine. I am connecting a StarTech NETRS2321E Net adapter to it. Won't ... Read More
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19:18 01-04-08
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Another question... [12 articles]
Dave - 19:17 01-04-08
The following link shows an LCD meter carried by my local parts depot. It says "panel meter" and the sales associate tells me it is actually a voltage meter that comes with so... Read More
Controller help needed [4 articles]
Hlias - 12:58 01-04-08
Hello everyone. I have an array of 20x20 electrodes (a pcb with a matrix of 20x20 terminals) and I would like to be able to control each one of them separately through a compu... Read More
Laser safety question [2 articles]
sert - 12:29 01-04-08
I just started working on laser systems. We have a problem on a laser installation, it uses laser to transmit data across about 200 metres. We had to use a scope (which is moun... Read More
CCT. Protection switch
Hammy - 09:39 01-04-08
I'm using a User activated mechanical DPDT to apply a 9VDC alkaline battery to a L7805 regulator.This in turn applies 5V to a pulsed one shot current source 50mA (20mA steady s... Read More
"coupled" Inductors [4 articles]
Jon Slaughter - 01:47 01-04-08
What are the components that are coils of wire that are used like an inductor but are wound on the same bobbin/core? I took a part a dsl filter and I'm trying to determine wha... Read More
high current voltage regulator? [8 articles]
20:09 31-03-08
Is there a version of the LM317 that works up to 10A? How about up to 5A? Michael ... Read More
Problem in autoscan FM radio [3 articles]
Allen Bong - 19:47 31-03-08
Dear group, I have this one-chip china-made auto-scan FM radio which has a problem. It has a "SCAN" and a "RESET" buttons on it. The scan button is used to tune and lock to ... Read More
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Wave Trap [3 articles]
Dave.H - 00:23 31-03-08
I have an old tube regenerative radio, but where I live, there's a powerful radio station that overpowers the other weaker stations, I want to build I wave trap, already have a 2... Read More
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21:09 30-03-08
cheap wholesale,nike ,sneaker ,sneakers ( cheap accept ) ( www.top-saler.com ) cheap wholesale,nike ,sneaker ,sneakers ( cheap accept ) ( www.top-s... Read More
Voltage ripple [2 articles]
Hammy - 19:41 30-03-08
I'm measuring the output ripple on my flyback (60 kHz @10W). I'm using 2 polymer aluminum caps 16V 470uf 9mohm 100 kHz ESR. The peak secondary current is 5 Amps full load this ... Read More
Regen Radio Ideas Needed [25 articles]
Dave.H - 00:58 30-03-08
I've been looking on the internet for regenerative radio plans, but haven't found any I like. I was hoping someone here could help. I want to build from scratch, no kits. I wou... Read More
Half Plated,Copper Electroplating PCB manufacturer in China Mainland [2 articles]
12:36 29-03-08
TOSHIN DEVELOPMENT TECHNOLOGIES LIMITD Established in 1998, located in Guangzhou,China mainland,Toshin Development Technologies Limited, has developed as a professional manufa... Read More
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